Dr. Stephen R. Master, MD
- Medicare services, 2017
- 881
- Industry payments
- $19,431
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 3400 Spruce Street, Philadelphia, PA 19104
- Practice phone
- Call (215) 662-6503
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Master's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Stephen R. Master is a clinical pathology/laboratory medicine physician in Philadelphia, Pennsylvania
Dr. Master practices in Philadelphia, Pennsylvania.
Dr. Master's NPI, 1396780821, was assigned on June 18, 2006. Dr. Master holds Pennsylvania license MD425041.
- NPI
- 1396780821NPI Registry (opens in a new tab)
- NPI enumeration date
- June 18, 2006
- NPI status
- Active
- Practice phone
- (215) 662-6503
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Stephen R. Master's practice address is in Philadelphia, Pennsylvania
Dr. Master's practice address in the NPI Registry is 3400 Spruce Street, Philadelphia, PA 19104. The practice phone is (215) 662-6503.
- NPI Registry address3400 Spruce Street, Philadelphia, PA 19104Phone(215) 662-6503
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Stephen R. Master's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Master practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Master's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen R. Master is one of 44 clinical pathology/laboratory medicine physicians in Pennsylvania
Clinical pathology/laboratory medicine is Dr. Master's primary specialty in the NPI Registry, under taxonomy code 207ZP0105X. Dr. Master is licensed in Pennsylvania.
Specialties and state licenses
- Clinical pathology/laboratory medicine, PennsylvaniaPrimary
Clinical pathology/laboratory medicine physicians near Dr. Master
Counts of clinical pathology/laboratory medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephen R. Master billed Medicare for 881 services in 2017
CMS data shows 881 Medicare services from Dr. Master across 4 procedure codes in 2017. Medicare paid $13,698 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Master's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Lab and pathology
- 2016: 5,1822017: 88183%
Dr. Master compared with the Pennsylvania median for clinical pathology/laboratory medicine physicians, 2017
- Dr. Master
- Pennsylvania median
- Medicare services
- 881vs 881Close to median
Medians across 49 clinical pathology/laboratory medicine physicians in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Master's most billed Medicare procedure codes, 2017
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Master and other clinical pathology/laboratory medicine physicians in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
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Dr. Stephen R. Master received $19,431 in industry payments from 2024 to 2025
CMS Open Payments shows 14 general payments to Dr. Master from 2 drug and device companies from 2024 to 2025. Compensation for serving as faculty or as a speaker for a medical education program make up the largest share, 46% of the total. Abbott Laboratories paid the most, $11,643.
General payments to Dr. Master by program year, 2024 to 2025
General payments to Dr. Master by kind, 2024 to 2025
- Compensation for serving as faculty or as a speaker for a medical education program$9,00046%
- Consulting fees$7,78840%
- Travel and lodging$1,8209%
- Food and beverage$8234%
Companies that paid Dr. Master the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Stephen R. Master's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Stephen R. Master
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Stephen R. Master's NPI number?
Dr. Stephen R. Master's NPI number is 1396780821. It was assigned on June 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen R. Master?
Dr. Stephen R. Master is a clinical pathology/laboratory medicine physician in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Clinical Pathology/Laboratory Medicine Physician (taxonomy code 207ZP0105X).
Where does Dr. Stephen R. Master practice?
Dr. Master practices at 3400 Spruce Street, Philadelphia, PA 19104.
What is Dr. Stephen R. Master's office phone number?
The practice phone on file for Dr. Master is (215) 662-6503.
What is Dr. Stephen R. Master's medical license number?
Dr. Master holds Pennsylvania license MD425041.
Does Dr. Stephen R. Master accept Medicare?
Yes. CMS data shows Dr. Master billed Medicare for 881 services in 2017.
What services does Dr. Stephen R. Master bill to Medicare?
In 2017, Dr. Master's most billed Medicare services were lab and pathology test (84165), lab and pathology test (86334) and lab and pathology test (84166).
Has Dr. Stephen R. Master received payments from drug or device companies?
CMS Open Payments shows $19,431 in general payments to Dr. Master from 2 companies from 2024 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Stephen R. Master been practicing?
Dr. Master's NPI was assigned in 2006.
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